CVE-2026-71438

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.8 and 11.16.1, Mermaid's configuration setters mermaid.initialize, mermaidAPI.setConfig, and mermaidAPI.updateSiteConfig merge caller-supplied configuration into Mermaid's interna...

EUVD-2026-54244

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.8 and 11.16.1, Mermaid's configuration setters mermaid.initialize, mermaidAPI.setConfig, and mermaidAPI.updateSiteConfig merge caller-supplied configuration into Mermaid's interna...

CVE-2026-71438

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.8 and 11.16.1, Mermaid's configuration setters mermaid.initialize, mermaidAPI.setConfig, and mermaidAPI.updateSiteConfig merge caller-supplied configuration into Mermaid's interna...

CVE-2026-71438 Mermaid configuration APIs allow prototype pollution

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.8 and 11.16.1, Mermaid's configuration setters mermaid.initialize, mermaidAPI.setConfig, and mermaidAPI.updateSiteConfig merge caller-supplied configuration into Mermaid's interna...

CVE-2026-71438 Mermaid configuration APIs allow prototype pollution

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.8 and 11.16.1, Mermaid's configuration setters mermaid.initialize, mermaidAPI.setConfig, and mermaidAPI.updateSiteConfig merge caller-supplied configuration into Mermaid's interna...

CVE-2026-71438

Mermaid (JavaScript) prior to versions 10.9.8 and 11.16.1 is vulnerable to prototype pollution via its configuration entry points mermaid.initialize, mermaidAPI.setConfig, and mermaidAPI.updateSiteConfig, which merge caller-supplied data into internal config using the assignWithDepth deep-merge h...

@8btc/excalidraw (>=0.18.0-beta.0, <=0.18.0-beta.4), @airmix/mcp-excalidraw-server (1.0.6) +244 more potentially affected by CVE-2026-41159 +1 more via mermaid (>=10.0.0, <=10.9.5)

mermaid NPM version =10.0.0, =0.18.0-beta.0, =0.17.0-alkemio-1, =1.0.0, =0.18.3, =0.18.0-1, =0.0.1-BETA, =0.18.1, =1.1.4, =0.17.1, =0.0.19, =0.0.1, =0.0.1, =3.0.0, =8.0.1 and more Source cves: CVE-2026-41159, CVE-2026-50159 Source advisory: OSV:GHSA-6X64-9X62-F2GX...

@8btc/excalidraw (>=0.18.0-beta.0, <=0.18.0-beta.4), @airmix/mcp-excalidraw-server (1.0.6) +244 more potentially affected by CVE-2026-50159 via mermaid (>=10.0.0, <=10.9.5)

mermaid NPM version =10.0.0, =0.18.0-beta.0, =0.17.0-alkemio-1, =1.0.0, =0.18.3, =0.18.0-1, =0.0.1-BETA, =0.18.1, =1.1.4, =0.17.1, =0.0.19, =0.0.1, =0.0.1, =3.0.0, =8.0.1 and more Source cves: CVE-2026-50159 Source advisory: SNYK:JS-MERMAID-18592305...

@142vip/vitepress (>=0.0.1-alpha.23, <=0.0.1-alpha.35), @142vip/vuepress (>=0.0.1-alpha.19, <=0.0.1-alpha.25) +225 more potentially affected by CVE-2026-41159 +1 more via mermaid (>=11.0.0, <=11.16.0)

mermaid NPM version =11.0.0, =0.0.1-alpha.23, =0.0.1-alpha.19, =0.0.0, =1.1.0, =2.1.0, =2.1.0, =2.1.0, =2.1.0, =2.1.0, =2.0.2, =0.0.3, =0.7.9, =0.35.0, =0.2.0, =1.0.1 and more Source cves: CVE-2026-41159, CVE-2026-50159 Source advisory: OSV:GHSA-6X64-9X62-F2GX...

GHSA-3RRR-JR9J-H3Q3 Mermaid Architecture diagrams are vulnerable to prototype pollution

Rendering an untrusted architecture-beta diagram lets the diagram author write an arbitrary property with the value horizontal or vertical onto Object.prototype. A group id of proto is accepted as a valid parent. Impact Any code in the same realm that reads a property of that name from an arbitra...

NPM: Mermaid Architecture diagrams are vulnerable to prototype pollution

NPM: Mermaid Architecture diagrams are vulnerable to prototype pollution vulnerability discovered by ? in WordPress Npm mermaid versions = 11.5.0, 11.16.1...

Prototype Pollution

Overview mermaid is a package for generation of diagrams and flowcharts from text in a similar manner as markdown. Affected versions of this package are vulnerable to Prototype Pollution via the architecture-beta diagram rendering process. An attacker can inject arbitrary properties with the valu...

Prototype Pollution

Overview org.webjars.npm:mermaid is a package for generation of diagrams and flowcharts from text in a similar manner as markdown. Affected versions of this package are vulnerable to Prototype Pollution via the architecture-beta diagram rendering process. An attacker can inject arbitrary properti...

Mermaid Architecture diagrams are vulnerable to prototype pollution

Rendering an untrusted architecture-beta diagram lets the diagram author write an arbitrary property with the value horizontal or vertical onto Object.prototype. A group id of proto is accepted as a valid parent. Impact Any code in the same realm that reads a property of that name from an arbitra...

CVE-2026-71437 Mermaid Architecture diagrams are vulnerable to prototype pollution

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.5.0 until 11.16.1, Mermaid Architecture Diagrams are vulnerable to prototype pollution when a diagram defines a group with an id of proto. Because the group id is used directly ...

CVE-2026-71437

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.5.0 until 11.16.1, Mermaid Architecture Diagrams are vulnerable to prototype pollution when a diagram defines a group with an id of proto. Because the group id is used directly ...

CVE-2026-71437 Mermaid Architecture diagrams are vulnerable to prototype pollution

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.5.0 until 11.16.1, Mermaid Architecture Diagrams are vulnerable to prototype pollution when a diagram defines a group with an id of proto. Because the group id is used directly ...

CVE-2026-71437

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.5.0 until 11.16.1, Mermaid Architecture Diagrams are vulnerable to prototype pollution when a diagram defines a group with an id of proto. Because the group id is used directly ...

CVE-2026-71437

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.5.0 until 11.16.1, Mermaid Architecture Diagrams are vulnerable to prototype pollution when a diagram defines a group with an id of proto. Because the group id is used directly ...

EUVD-2026-54242

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.5.0 until 11.16.1, Mermaid Architecture Diagrams are vulnerable to prototype pollution when a diagram defines a group with an id of proto. Because the group id is used directly ...